 * {padding:0px;margin:0px;}
        .box {width:500px;height:180px;overflow: hidden; position: relative;}
        ul {
            list-style:none;
            position: absolute;
            bottom: 10px;
            left: 50%;
            margin-left: -60px;
        }
        ul li {
            float: left;
            width: 10px;
            height:10px;
            background: #fff;
            border-radius: 50%;
            margin-right: 10px;
        }
        ul li.active {background: blue;}
 
